CASC2D is a square-grid (raster) hydrologic model that solves the equations of transport of mass, energy, and momentum between model grid cells using a finite difference formulation. The model can be used in the simulation of spatially-varied Hortonian watershed hydrology and erosion/sediment transport. CASC2D can be run in a single-event mode, or in continuous mode. Continuous simulations can be run for an indefinite period of time. Model computational time-steps for numerical stability range from 1 second to 20 seconds, depending upon the grid size and rainfall intensity.
Description: CASC2D.pdf. Website: https://www.engr.colostate.edu/CASC2D